GB838144A - Radioactivity warning apparatus - Google Patents

Radioactivity warning apparatus

Info

Publication number
GB838144A
GB838144A GB3221057A GB3221057A GB838144A GB 838144 A GB838144 A GB 838144A GB 3221057 A GB3221057 A GB 3221057A GB 3221057 A GB3221057 A GB 3221057A GB 838144 A GB838144 A GB 838144A
Authority
GB
United Kingdom
Prior art keywords
radiation
particles
trapped
radioactivity
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3221057A
Inventor
Hugh Arthur Staines
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BARCROSS Ltd
Original Assignee
BARCROSS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BARCROSS Ltd filed Critical BARCROSS Ltd
Priority to GB3221057A priority Critical patent/GB838144A/en
Publication of GB838144A publication Critical patent/GB838144A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
    • G01T7/04—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids by filtration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

838,144. Detecting radioactivity. BARCROSS Ltd. Oct. 15, 1958 [Oct. 15, 1957], No. 32210/57. Class 40 (3). A rise in radioactivity in dust particles in a gas is detected by passing the gas through a filter at a constant rate and detecting the radiation from particles trapped in the filter. Under steady conditions the increase in radiation due to new particles being trapped is balanced by the decrease due to natural decay of activity from the old particles, and the detector output is constant. A rise in output therefore denotes an increased number of radioactive particles being trapped. In the Figure a constant-speed displacement pump 13 sucks air into a chamber 15 via a filter paper 16. A Geiger counter 20 detects the beta radiation from the paper, and a further counter 23 measures the background radiation. Signals from the two counters are combined in a rate meter 22 and their difference operates a recording chart and audible alarm in a unit 25. A further warning is given if the pressure in the chamber 15 rises due to rupture of the filter paper. The Geiger counter can be replaced or supplemented by a scintillation counter and photomultiplier for detecting alpha radiation.
GB3221057A 1958-10-15 1958-10-15 Radioactivity warning apparatus Expired GB838144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3221057A GB838144A (en) 1958-10-15 1958-10-15 Radioactivity warning apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3221057A GB838144A (en) 1958-10-15 1958-10-15 Radioactivity warning apparatus

Publications (1)

Publication Number Publication Date
GB838144A true GB838144A (en) 1960-06-22

Family

ID=10335015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3221057A Expired GB838144A (en) 1958-10-15 1958-10-15 Radioactivity warning apparatus

Country Status (1)

Country Link
GB (1) GB838144A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803440A1 (en) * 1978-01-26 1979-08-02 Muenchener Apparatebau Fuer El ARRANGEMENT FOR MEASURING RADIOACTIVITY CONCENTRATIONS
FR2516243A1 (en) * 1981-11-10 1983-05-13 Novelec DEVICE, ASSEMBLY AND HEAD FOR DETECTING PARTICLES OF AEROSOL HAVING RADIOACTIVE PROPERTIES
WO2013135938A1 (en) * 2012-03-16 2013-09-19 Universitat Rovira I Virgili Station for identifying and measuring environmental gamma radiation in real time by means of spectrometry on a paper filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803440A1 (en) * 1978-01-26 1979-08-02 Muenchener Apparatebau Fuer El ARRANGEMENT FOR MEASURING RADIOACTIVITY CONCENTRATIONS
FR2516243A1 (en) * 1981-11-10 1983-05-13 Novelec DEVICE, ASSEMBLY AND HEAD FOR DETECTING PARTICLES OF AEROSOL HAVING RADIOACTIVE PROPERTIES
EP0079079A1 (en) * 1981-11-10 1983-05-18 NOVELEC Société à Responsabilité limitée dite: Apparatus and detector head for radioactive aerosol particles
WO2013135938A1 (en) * 2012-03-16 2013-09-19 Universitat Rovira I Virgili Station for identifying and measuring environmental gamma radiation in real time by means of spectrometry on a paper filter

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